<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script src="https://cdn.jsdelivr.net/npm/vue@2.6.10/dist/vue.js"></script>
    <title>Document</title>
</head>
<body>
    <div id="app">
         <!-- 
        业务场景:
          input中输入什么,则p标签中展示什么

       -->
       输入框1: <input type="text" @input="changeMsg"/>
       <br>
       输入框2: <input type="text" @input="msg=$event.target.value"/>
       <p>{{msg}}</p>
    </div>
    <script>
      Vue.config.productionTip = false;
        const vm = new Vue({
            el:"#app",
            data(){
                return{
                    msg:"",
                };
            },
            methods:{
                changeMsg(e){
                    this.msg = e.target.value
                }
            }
        })
    </script>
</body>
</html>